C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
C07C 69/593 (2006.01) C07C 69/75 (2006.01) C08G 18/42 (2006.01) C08G 18/68 (2006.01) C08G 18/78 (2006.01) C08G 63/20 (2006.01) C08G 63/52 (2006.01) C08G 63/56 (2006.01) C09D 175/06 (2006.01) C09D 175/14 (2006.01)
Patent
CA 2138310
The present invention relates to polyester polyols having hydroxyl numbers of 175 to 520 which are the reaction products of a) 50 to 60 mole % of a polyol component containing (i) 0 to 39 mole % of one or more dihydric aliphatic or cycloaliphatic alcohols having at least 2 carbon atoms other than neopentyl glycol, (ii) 20 to 59 mole % of neopentyl glycol and (iii) 41 to 80 mole % of one or more at least trihydric aliphatic alcohols containing at least 3 carbon atoms and b) 40 to 50 mole % of a dicarboxylic acid component containing (iv) 0 to 60 mole % of one or more aliphatic or cycloaliphatic, saturated or unsaturated dicarboxylic acids or their anhydrides having at least 2 carbon atoms other than fumaric acid, itaconic acid and maleic acid or their anhydrides and (v) 40 to 100 mole % of one or more of fumaric acid, itaconic acid, maleic acid or their anhydrides, wherein the percentages set forth in a) and b) each add up to 100. The present invention also relates to the use of these polyester polyols, optionally in admixture with other organic polyhydroxyl compounds, as a binder component for two-component polyurethane lacquers also containing lacquer polyisocyanates, more particularly for the production of lacquer coatings on large vehicles and in car repair lacquering.
Meixner Jurgen
Sonntag Michael
Wamprecht Christian
Aktiengesellschaft Bayer
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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